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Finding the Fourth Proportional to 358,625.21, 494,904.20 and 215,387.64

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Solution

The fourth proportional to 358,625.21, 494,904.20 and 215,387.64 is: 297,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,625.21 : 494,904.20 = 215,387.64 : x
  2. Step 2: Convert to fraction form
    358,625.21/494,904.20 = 215,387.64/x
  3. Step 3: Cross multiply
    358,625.21x = 494,904.20 × 215,387.64
  4. Step 4: Simplify right side
    358,625.21x = 106,596,246,587.15
  5. Step 5: Solve for x
    x = 106,596,246,587.15/358,625.21
  6. Step 6: Final answer
    x = 297,235.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.